[gregkh]

Simplest thing to do, just run Linus's latest releases (the -rc releases), or from his git tree, on your machine and report any problem.

Second-simplest thing to do is to run the linux-next branch/tree on your machines and report any build warnings and runtime issues you find. That's what will be the "next" kernel releases and is where all of the developer/maintainer trees are merged together before they are sent to Linus.

Both of those should be very easy to do, and any problems found there should be easy to fix and resolve before they get to a "real" release.